You do know (1) Sony IP (2) Sony hired this apparently incompetent dev to do the work for them?
The buck stops at the top
Ballistic Moon is made up of senior developers that has work on other games including the Original Until Dawn.
A lot of Studios people champion including the biggest in the business don't even have the original staff and is made up of Devs that have been there as little as 5 years
The developer had no experience with Decima? (Sounds like they didn't have much experience with UE either to be honest)
But they do, they made the original with Decima and they used UE before.
Going by Shirrakos gameplay, there is a couple of dips during transitions but I couldn't see anything else the section I saw
It seems to be targeting 30fps but we don't know what graphic modes there are and this game may not be able to hold 30fps being UE5.
They're also playing it before launch so they'll be missing the stupid day one patch too
We do know this has PS5 Pro support though so if it performance is the same on there, then we can start calling out the development team.